Iam really facing a problem when it comes to order variation whether it is a sales order or purchase order. After submitting the document and doing some work on this document like partial receipt or payment or partial invoice, Some time in real business Iam urged to modify the order based on customer request. And as far as I know it is not supported by ERPNEXT because it is not allowable to modify the document or the remaining items. Please I need help with this issue.